Streaming

ABSTRACT

Fluid nozzle with an axial flow passage, an inlet of area less than that of the passage directly downstream thereof, and an even plurality of radial orifices into the passage arranged in coaxial pairs 180* apart.

United States Patent 1 1 3,581,992

[72] Inventor Nathaniel Huges [56] Refgrences Cited N gg Cahf- UNITEDSTATES PATENTS P 3,182,675 5/1965 Zilberfarb eta]. 137/815 22 FllcdApr.23, 1969 3,240,254 3/1966 Hughes 239/102X [45] Patented June 1,1971

. 3,370,794 2/1968 Drewry et a1... 239/265.17 [73] AsslgneeEnergySuences,lnc. 3 371 869 3 1968 H h 239 02 El s c t 1 ug 8S PrimaryExaminer-Lloyd L. King Assistant Examiner-Michae1 Y. Mar STREAMINGAttorney-William W.Rymer,.lr.

11 Claims, 3 Drawing Figs.

[52] U.S.Cl 239/102,

239/431, 239/5905, 137/815 ABSTRACT: Fluid nozzle with an axial flowpassage, an inlet [51] lnt.C1 B05b 3/14 of area less than that of thepassage directly downstream [50] Field ofSearch 239/102, thereof, and aneven plurality of radial orifices into the passage arranged in coaxialpairs 180 apart.

PATENTED JUN 1 l9?! FIG. '3

STREAMING This invention relates to gas nozzles.

Objects of the invention are to enhance the directly useable (e.g., forliquid atomization) energy in gas streams, with small nozzles that canbe simply and efficiently incorporated into a wide variety of physicalprocesses.

The invention features a fluid nozzle with an axial flow passage, aninlet of area less than that of the passage directly downstream thereof,and an even plurality of radial orifices into the passage arranged incoaxial pairs 180 apart. In preferred embodiments the inlet is acircular hole in a thin plate; the passage is a counterbore to theinlet; circular holes into the passage surround the inlet, eachbeing'included in a pair of such holes spaced 180 apart at oppositesides of the inlet; four radial orifices spaced 90 apart are tangent toa countersink at the outletend of the passage, the area of the inletdiffering from the total area of the radial orifices by no more thanhalf the area of any one of the radial orifices; and the nozzle has aflange at its outlet end adapting it for mounting in a tube to define anannular passage surrounding the tube and communicating with the radialorifices, the tube having an inlet opening of diameter approximatelyequal to that of the nozzle at its inlet end.

Other objects, features, and advantages of the invention will beapparent from the following description of a preferred embodimentthereof, taken together with the drawings thereof, in which:

. FIGS. 1 and 2 are perspective views, from different vantage points;and

FIG. 3 is a vertical sectional view showing the nozzle of FIGS. 1 and 2mounted, as preferred, in a cell.

Nozzle has a cylindrical wall 12 (outside diameter 0.346 inch, insidediameter 0.260 inch) open at its outlet end across 45 countersink 14,which is surrounded by annular flange 16.

Axial inlet 18 (diameter 0.177 inch) in end wall 19 is concen-Additional dimensions of the assembly are: I h

nc Length of tube 30 between downstream face of wall 38 and upstreamface of counterbore 32 0. 267 Length of nozzle 10 between wall 19 andcountersink 14 0. 221 Depth of countersink 14 0. 029

, In operation, air at greater than atmospheric pressure (e.g., atbetween /4 and 20 p.s.i.g.) is supplied to inlet 36 and flows throughnozzle inlet 18, and holes 20 and 22, and out of the nozzle acrosscountersink 14.

Liquid can very effectively be atomized by, e.g., introducing the liquidwith the air at inlet 36 or through holes 22, or by causing the streamleaving the nozzle to impinge upon the liquid, even at a distance ofseveral inches or more.

Other embodiments will occur to those skilled in the art and are withinthe following claims.

What I claim is:

l. A fluid nozzle, comprising a body defining an axial flow passagehaving inlet and outlet ends,

a portion at said inlet end defining an axial inlet to said passage, thearea of said inlet being less than the area of said passage directlydownstream thereof, openings into said passage being provided in saidportion radially outwardly of said axial inlet, and

an even plurality of radial orifices in said body between said ends,said orifices communicating with said passage and being arranged incoaxial pairs 180 apart. 2. The nozzle of claim 1 wherein said passagehas a cylindrical wall and said inlet is of circular cross section.

3. The nozzle of claim 2 wherein said passage is a counterbore to saidinlet.

4. The nozzle of claim 1 wherein said body has a countersink at saidoutlet end.

5. The nozzle of claim 1 wherein said portion is a thin wall.

6. The nozzle of claim 1 wherein said openings are holes of circularcross section, each being included in a pair of said holes spaced 180apart at opposite sides of said axial inlet.

7. The nozzle of claim 2 wherein said radial orifices are directlyadjacent the outlet end of said cylindrical wall.

8. The nozzle of claim 7 wherein said body has a countersink at saidoutlet end of said passage, directly downstream of said cylindrical walland tangent to said radial orifices.

9. The nozzle of claim 1 wherein there are four of said radial orificesspaced 90 apart.

10. The nozzle of claim 1 wherein said area of said inlet differs fromthe total area of said radial orifices by no more than half the area ofany one of said radial orifices.

11. A fluid nozzle, comprising a body defining an axial flow passagehaving inlet and outlet ends,

a portion at said inlet end defining an axial inlet to said passage, thearea of said inlet being less than the area of said passage directlydownstream thereof, and

an even plurality of radial orifices in said body between said ends,said orifices communicating with said passage and being arranged incoaxial pairs 180 apart,

said body having at said outlet end a flange extending radiallyoutwardly of said orifices, whereby said nozzle is adapted to be mountedin a tube with said flange in contact with the inner wall of said tube,so that said tube and said body define upstream of said flange anannular passage surrounding said nozzle and communicating with saidorifices, said tube being larger than said body and having an inletopening of a diameter approximately equal to that of said body at saidinlet end.

1. A fluid nozzle, comprising A BODY DEFINING AN AXIAL FLOW PASSAGEHAVING INLET AND OUTLET ENDS, A PORTION AT SAID INLET END DEFINING ANAXIAL INLET TO SAID PASSAGE, THE AREA OF SAID INLET BEING LESS THAN THEAREA OF SAID PASSAGE DIRECTLY DOWNSTREAM THEREOF, OPENINGS INTO SAIDPASSAGE BEING PROVIDED IN SAID PORTION RADIALLY OUTWARDLY OF SAID AXIALINLET, AND AN EVEN PLURALITY OF RADIAL ORIFICES IN SAID BODY BETWEENSAID ENDS, SAID ORIFICES COMMUNICATING WITH SAID PASSAGE AND BEINGARRANGED IN COAXIAL PAIRS 180* APART.
 2. The nozzle of claim 1 whereinsaid passage has a cylindrical wall and said inlet is of circular crosssection.
 3. The nozzle of claim 2 wherein said passage is a counterboreto said inlet.
 4. The nozzle of claim 1 wherein said body has acountersink at said outlet end.
 5. The nozzle of claim 1 wherein saidportion is a thin wall.
 6. The nozzle of claim 1 wherein said openingsare holes of circular cross section, each being included in a pair ofsaid holes spaced 180* apart at opposite sides of said axial inlet. 7.The nozzle of claim 2 wherein said radial orifices are directly adjacentthe outlet end of said cylindrical wall.
 8. The nozzle of claim 7wherein said body has a countersink at said outlet end of said passage,directly downstream of said cylindrical wall and tangent to said radialorifices.
 9. The nozzle of claim 1 wherein there are four of said radialorifices spaced 90* apart.
 10. The nozzle of claim 1 wherein said areaof said inlet differs from the total area of said radial orifices by nomore than half the area of any one of said radial orifices.
 11. A fluidnozzle, comprising a body defining an axial flow passage having inletand outlet ends, a portion at said inlet end defining an axial inlet tosaid passage, the area of said inlet being less than the area of saidpassage directly downstream thereof, and an even plurality of radialorifices in said body between said ends, said orifices communicatingwith said passage and being arranged in coaxial pairs 180* apart, saidbody having at said outlet end a flange extending radially outwardly ofsaid orifices, whereby said nozzle is adapted to be mounted in a tubewith said flange in contact with the inner wall of said tube, so thatsaid tube and said body define upstream of said flange an annularpassage surrounding said nozzle and communicating with said orifices,said tube being larger than said body and having an inlet opening of adiameter approximately equal to that of said body at said inlet end.